Lesson 3.2.1.1

3.2.1.1 Classification Quiz: AQA Chemistry, Unit 2

20 questions

Written by Revision Ninja · Last reviewed 11 October 2026

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Lesson 3.2.1.1, Classification: 20 multiple choice questions for the AQA Chemistry (7405), Unit 2: Inorganic chemistry, written with Revision Ninja.

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The 20 questions

  1. What determines the block (s, p, d or f) to which an element belongs in the Periodic Table?

    • Its relative atomic mass, which fixes its position in its period
    • Its density at room temperature, which sets its row in the table
    • Its proton number, which determines its electron configuration
    • Its number of neutrons, which determines its group number

  2. Which block does calcium, with proton number 20, belong to?

    • p-block
    • d-block
    • f-block
    • s-block

  3. Which block does iron, with proton number 26, belong to?

    • p-block
    • f-block
    • s-block
    • d-block

  4. Which block does aluminium, with proton number 13, belong to?

    • s-block
    • p-block
    • f-block
    • d-block

  5. Which block does helium belong to, even though it is in Group 18?

    • p-block
    • s-block
    • d-block
    • f-block

  6. Which block does cerium, with proton number 58, belong to?

    • s-block
    • d-block
    • f-block
    • p-block

  7. Which block does chlorine, with proton number 17, belong to?

    • p-block
    • f-block
    • s-block
    • d-block

  8. Which block contains the transition metals?

    • The d-block
    • The s-block
    • The p-block
    • The f-block

  9. An element has outer electron configuration ns2 np4. Which block is it in?

    • d-block, in Group 16
    • s-block, in Group 2
    • p-block, in Group 16
    • f-block, in Group 4

  10. Copper, with proton number 29, is classified in which block?

    • d-block
    • f-block
    • p-block
    • s-block

  11. Strontium, with proton number 38, is in which block?

    • d-block
    • s-block
    • p-block
    • f-block

  12. How many s-block elements are in Period 3?

    • 2, which are sodium and magnesium
    • 6, which are aluminium to argon
    • 1, which is sodium only
    • 10, which are the transition metals

  13. How many p-block elements are in Period 3?

    • 2, from sodium to magnesium
    • 8, from sodium to argon
    • 6, from aluminium to argon
    • 10, the transition metals

  14. Which element of Period 2 is the first p-block element?

    • Helium, with proton number 2
    • Lithium, with proton number 3
    • Beryllium, with proton number 4
    • Boron, with proton number 5

  15. Why are the lanthanides and actinides shown as a separate row from the main table?

    • They are gases at room temperature, so they cannot be placed in the main table
    • Their electrons fill the f subshell, so they form a separate f-block
    • They are radioactive, so they are kept away from other elements
    • They have no electrons in their outer shell, so they are not in any group

  16. Why is the Periodic Table arranged by proton number?

    • Proton number gives the density of each element, which is the key to its chemical behaviour
    • Proton number gives the number of electrons, which determines the chemical properties and the block of each element
    • Proton number gives the number of neutrons, which is the main factor in chemical reactivity
    • Relative atomic mass is always a whole number, so the proton number is the only way to order elements

  17. Which element has the outer electron configuration 3s2 3p6?

    • Magnesium, an s-block element in Group 2
    • Argon, a noble gas in Group 18 and the p-block
    • Chlorine, a p-block element in Group 17
    • Sodium, an s-block element in Group 1

  18. Which description correctly links an element's block to its group number for a main-group element?

    • The group number counts the outer electrons, which sit in the s or p subshells being filled
    • The group number equals the number of shells, which sit in the f subshell being filled
    • The group number is random and not linked to any electron configuration
    • The group number counts the neutrons, which sit in the d subshell being filled

  19. Which block contains the noble gases?

    • The d-block, apart from helium, which is a p-block element
    • The p-block, apart from helium, which is an s-block element
    • The f-block, which contains all of the noble gases
    • The s-block, which contains all of the noble gases

  20. Which block contains the alkali metals?

    • The d-block, in Group 1
    • The f-block, in Group 1
    • The p-block, in Group 1
    • The s-block, in Group 1

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